A powerful bomb exploded on a railway track in Karbi Anglong district of central Assam early on Thursday morning. According to the police, the attack was targeted at the Delhi-Dibrugarh Rajdhani Express by militants from the suspected Karbi Longri National Liberation Front insurgent group.

Nobody was injured in the blast. The incident occurred five kms away from Diphu, just after a security escort engine for checking the tracks passed the area prior to the movement of the Rajdhani Express, police said, adding that the blast caused a 2.5 feet deep crater on the track.

District Superintendent of police K K Sharma and the senior officials of the Five Rajputana Rifles rushed to the blast site and recovered another powerful improvised explosive devise on the tracks. The IED was removed and safely defused at a distance at 5.10 am, the police said.

Meanwhile, the train has been halted at Diphu railway station and the track was being repaired, they said. The Karbi Longri National Liberation Front has been launching violent strikes in the district since March 17, after their unilateral ceasefire ended.

For the forthcoming Lok Sabha polls, the KLNLF had submitted a five-point charter to political parties, asking them to clarify their stands on its demands.